JPS5886368A - Air-conditioning hot-water supply device - Google Patents
Air-conditioning hot-water supply deviceInfo
- Publication number
- JPS5886368A JPS5886368A JP56184519A JP18451981A JPS5886368A JP S5886368 A JPS5886368 A JP S5886368A JP 56184519 A JP56184519 A JP 56184519A JP 18451981 A JP18451981 A JP 18451981A JP S5886368 A JPS5886368 A JP S5886368A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- water
- hot water
- heating
- water supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
Landscapes
- Steam Or Hot-Water Central Heating Systems (AREA)
- Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
- Nozzles (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明に熱動機関駆動による冷房、暖房および給湯を行
なうことができる冷暖房給湯装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air-conditioning/heating-water supply device capable of cooling, heating, and supplying hot water by means of a thermal engine.
従来の空気調和装置には、例えば特開昭５６−９６０号
公報に記載されているように、エンジンで駆動される圧
縮機、室内ｇＩＩＩ熱交換器、室外側熱交換器、膨張器
、および四方弁より構成され、四方弁により冷房時は室
内側熱交換器を蒸発器、室外側熱交換器を凝縮器として
使用し、暖房時は室内側熱交換器全凝縮器、室外１１０
熱交換器を蒸発器として使用し、エンジンを冷却した温
水が流れる原動機冷却系統の補助熱交換器を室内側熱交
換器と室外側熱交換器のうち少なくとも一方側の近くに
設置したものがあり、１だ冷暖房給湯装置には、特開昭
５６−３０５６７号公報に記載されているように、エン
ジンで駆動される圧１ｒｒ３機紫備えた冷暖房装置と、
前Ｂαエンジンの排熱を給湯熱源およひ前記冷暖房装置
の暖房補助熱源にする排熱利用熱交換器とを具備したも
のがあるが、前者装置は給湯機能を有しておらす、後者
装置はエンジンの排熱のみを給湯熱源として利用するに
とど貰っており、いずれも有効な利用とは言い難かった
。また、いずれも室内側には冷媒熱交換器とエンジン排
熱用熱交換器が配設されているためそれぞれ往復配管が
２本必喪であり、計４本の配管を現地で接続しなければ
ならなかった。Conventional air conditioners include, for example, a compressor driven by an engine, an indoor GIII heat exchanger, an outdoor heat exchanger, an expander, and a four-way The four-way valve uses the indoor heat exchanger as an evaporator and the outdoor heat exchanger as a condenser during cooling, and uses the indoor heat exchanger as a total condenser and the outdoor 110 as a condenser during heating.
There is a type that uses a heat exchanger as an evaporator and has an auxiliary heat exchanger in the motor cooling system through which hot water used to cool the engine flows, installed near at least one side of the indoor heat exchanger and outdoor heat exchanger. As described in Japanese Unexamined Patent Application Publication No. 56-30567, the air-conditioning/heating/water heating system includes an air-conditioning/heating system equipped with three pressure 1rr units driven by an engine;
There is a device that is equipped with an exhaust heat heat exchanger that uses the exhaust heat of the Bα engine as a hot water supply heat source and as an auxiliary heating heat source for the air-conditioning device, but the former device has a hot water supply function, while the latter device However, only the exhaust heat from the engine was used as a heat source for hot water supply, and neither of these methods could be called effective. In addition, since a refrigerant heat exchanger and an engine exhaust heat heat exchanger are installed indoors, two reciprocating pipes are required for each, and a total of four pipes must be connected on-site. did not become.
本発明の目的は、給湯熱源としてエンジンの排熱の他に
ヒートポンプ式冷凍機の凝縮熱ケ利用して、両熱源によ
る強力な加熱で瞬時に給ｏｈ取り出しが行なえ、しかも
現地接続配管全最少の２本に抑えながらも暖房時排熱利
用するエンジンの高温排熱がヒートポンプ式冷凍機の暖
房能力に悪影響ケ及ぼさない高効率な冷暖房給湯装置を
提供することにあり、装置のユニットヲ簡易化し、小型
化し、コストの低減、信頼性の向上、簡易化、メンテナ
ンス性の向上、作業性の向上全図ったものである。The purpose of the present invention is to use the condensation heat of a heat pump type refrigerator in addition to engine exhaust heat as a hot water supply heat source, and to be able to perform hot water supply instantaneously with powerful heating from both heat sources, and to minimize the total number of on-site connection piping. The objective is to provide a highly efficient air-conditioning/heating and hot water supply system in which the high-temperature exhaust heat of the engine, which utilizes exhaust heat during heating, does not adversely affect the heating capacity of the heat pump refrigerator, although the number of units is kept to two. The aim is to reduce costs, improve reliability, simplify maintenance, improve maintainability, and improve workability.
七の目的を達成するために、本発明による冷暖房給湯装
置は、熱動機関によって駆動される冷媒圧縮機と、温水
用主熱交換器と、冷暖房時にそれぞれ一方が凝縮器、他
方が蒸発器として便用される室内用および室外用熱交換
器とｒ有するヒートポンプ式冷媒回路と、前記熱動機関
と、該機関からの高温排水全放熱する温水用補助熱交換
器と、この排水の熱を室外に排棄する室外用放熱器とを
有する排熱水回路と、前記温水用主熱交換器および温水
用補助熱交換器で加熱される温水器と、暖房時前記温水
器と並流し冷房時該温水器全バイパスして前記室内用熱
交換器と熱交換される水側熱交換器と、該熱交換器と並
設された室内側熱交換器とを有する循環水回路と、前記
温水器で加熱され市水が加熱される給湯用加熱ｂヶ有す
る給湯回路とから構成したものである。In order to achieve the seventh objective, the air conditioning/heating/water supply device according to the present invention includes a refrigerant compressor driven by a thermal engine, a main heat exchanger for hot water, and one of which functions as a condenser and the other as an evaporator during cooling and heating. A heat pump type refrigerant circuit having a heat exchanger for indoor and outdoor use, the thermal engine, an auxiliary heat exchanger for hot water that radiates all the heat of high-temperature waste water from the engine, and a hot water exhaust circuit having an outdoor radiator for discharging water to the water; a water heater heated by the main heat exchanger for hot water and the auxiliary heat exchanger for hot water; A circulating water circuit having a water side heat exchanger that completely bypasses the water heater and exchanges heat with the indoor heat exchanger, and an indoor heat exchanger installed in parallel with the heat exchanger; It is constructed from a hot water supply circuit having two hot water heaters b for heating city water.
以下本発明による冷暖房給湯装置の実施例について図面
を参照して説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the air-conditioning, heating, and hot-water supply apparatus according to the present invention will be described below with reference to the drawings.
まずヒートポンプ式冷媒回路の構成について説明する。First, the configuration of the heat pump refrigerant circuit will be explained.
熱動機関１で駆動される圧縮機２によって圧縮された冷
媒は四方弁３に至り、温水用主熱交換器４を通ったのち
、電磁弁５または膨張器６のいずれか會経てファン７會
有する室外用熱交換器８を通り、さらに電磁弁９塘たに
膨張器１０のいずれかを経て室内用熱交換器１１ケ通っ
たのち前記四力弁乙に至り、アキームレータ１２を経て
圧縮機２に戻るようになっており、その四方弁６によっ
て前述の逆回りケするように切換えられるつぎに熱動機
関１の排熱水回路は、ポンプ１６から送出され熱動機関
１全冷却した循環水が触媒マフラ１４、温水用補助熱交
換器１５、ファン１６を有する室外用放熱器１７ケ経て
ポンプ１６に戻るように構成されている。The refrigerant compressed by the compressor 2 driven by the thermal engine 1 reaches the four-way valve 3, passes through the hot water main heat exchanger 4, and then passes through either the electromagnetic valve 5 or the expander 6, and then is sent to the fan 7. It passes through the outdoor heat exchanger 8, which has 9 solenoid valves, and the expander 10, then passes through the 11 indoor heat exchangers, and then reaches the four-force valve O, and then passes through the achievator 12 and the compressor. 2, and is switched by the four-way valve 6 to perform the above-mentioned reverse rotation.Next, the exhaust hot water circuit of the thermal engine 1 is sent out from the pump 16 to circulate the thermal engine 1 completely cooled. Water is configured to return to the pump 16 via a catalyst muffler 14, an auxiliary hot water heat exchanger 15, and 17 outdoor radiators each having a fan 16.
つぎに給湯回路は、市水給水配管１８から減圧逆止弁１
９を経て給湯用加熱器２０を通り、蛇口２１に至るよう
に構成されている。Next, the hot water supply circuit is connected from the city water supply pipe 18 to the pressure reducing check valve 1.
9, a hot water heater 20, and a faucet 21.
つぎに循環水回路は、循環水ポンプ２２から送出された
循環水が２６の点で水側熱交換ｂ２４を通る回路２５と
温水器２６、電磁弁２７を通る回路２８とに分岐して、
２９の点で合流してファン６０を有する室内側熱交換器
６１倉経てホ／グ２２に戻るように構成されている。同
、温水用主熱交換器４、温水用補助熱交換器１５、給湯
用加熱器２０は蓄熱タンク状に形成された温水器２６内
に収納されている。３２Ｖｉ、室内ユニット、６３は室
外に据伺けられる機械ユニット、６４．６５は現地で配
管接続されるユニット間配管である。Next, in the circulating water circuit, the circulating water sent from the circulating water pump 22 is branched at point 26 into a circuit 25 passing through the water side heat exchange b24, and a circuit 28 passing through the water heater 26 and the electromagnetic valve 27.
29 and return to the hog 22 via an indoor heat exchanger 61 having a fan 60. Similarly, the hot water main heat exchanger 4, the hot water auxiliary heat exchanger 15, and the hot water heater 20 are housed in a water heater 26 formed in the shape of a heat storage tank. 32Vi is an indoor unit, 63 is a mechanical unit that can be installed outdoors, and 64.65 is an inter-unit piping that is connected on-site.
つきに冷房、暖房、給湯、除霜のそれぞれの運転時にお
けるヒートポンプ式冷媒回路、排熱水回路、循環水回路
、給湯回路のそれぞれの回路の作動金説明する。We will also explain the operating costs of the heat pump refrigerant circuit, hot water exhaust circuit, circulating water circuit, and hot water supply circuit during cooling, heating, hot water supply, and defrosting operations.
（１）冷房運転時における作動
■ 冷媒回路の説明
圧縮機２ケ出た冷媒は四方弁６を通り温水用主熱交換器
４に入り一次凝縮され電磁弁５ヶ通過して室外用熱交換
器８に入る（ファン７は連転）。その室外用熱交換器８
で二次凝縮された冷媒は膨張’ｔｉ １０に流れ膨張す
る。(1) Operation during cooling operation ■ Description of refrigerant circuit The refrigerant discharged from the two compressors passes through the four-way valve 6, enters the hot water main heat exchanger 4, is condensed, and passes through five solenoid valves to the outdoor heat exchanger. 8 (Fan 7 is running continuously). The outdoor heat exchanger 8
The refrigerant that is secondarily condensed flows to expansion 'ti 10 and expands.
膨張された冷媒に室内用熱交換器１１に入り蒸発する。The expanded refrigerant enters the indoor heat exchanger 11 and evaporates.
蒸発した冷媒は四方弁６を通ってアキームレータ１２ｉ
経て圧縮機２へ吸い込まれる。The evaporated refrigerant passes through the four-way valve 6 to the achievable refrigerant 12i.
After that, it is sucked into the compressor 2.
Ｏ循環水回路の説明
循環水ポンプ２２により吐出された循環水は水側熱交換
器２４に入る（電磁弁２７により直進回路は止まってお
りＬ字型に曲る）。Description of O Circulating Water Circuit Circulating water discharged by the circulating water pump 22 enters the water side heat exchanger 24 (the straight circuit is stopped by the solenoid valve 27 and is bent into an L shape).
ここで冷却された循環水は室内側熱交換器６１に至る（
ファン３０は運転）。ここで熱交換された循環水は循環
水ポンプ２２に戻る。The circulating water cooled here reaches the indoor heat exchanger 61 (
fan 30 is running). The circulating water that has undergone heat exchange here returns to the circulating water pump 22.
θ 排熱水回路の説明
ポンプ１６により吐出された冷却水は熱動機関１を冷却
し触媒マフラ１４に入り触媒マフラ１４にて排熱を吸収
して温水用補助熱交換器１５に入る。その温水用補助熱
交換器１５ケ出た冷却水は室外用放熱器１７にて熱交換
され（ファン１６は運転）、ポンプ１６へと流れる。冷
房時における給湯はファン１６ｉ停止して行なう。θ Description of Exhaust Hot Water Circuit Cooling water discharged by the pump 16 cools the thermal engine 1, enters the catalyst muffler 14, absorbs exhaust heat at the catalyst muffler 14, and enters the hot water auxiliary heat exchanger 15. The cooling water discharged from the 15 hot water auxiliary heat exchangers undergoes heat exchange in the outdoor radiator 17 (the fan 16 is in operation), and flows to the pump 16. Hot water supply during cooling is performed with the fan 16i stopped.
（２）暖房運転時における作動
■ 冷媒回路の説明
圧縮機２を出た冷媒は四方弁６倉通り室内用熱交換器１
１に入り、凝縮された後膨張脂１０により膨張され室外
用熱交換器８に入る（）７ン７／ａ、運転）。ここで−
次蒸発した冷媒は電磁弁５金通って温水用熱交換仝４で
二次蒸発し、四方弁６、アキ−ムレ−タコ２ケ経て圧縮
機２に吸い込まれる。(2) Operation during heating operation ■ Explanation of the refrigerant circuit The refrigerant that exits the compressor 2 is passed through the four-way valve 6 and indoor heat exchanger 1.
1, and after being condensed, it is expanded by the expanding fat 10 and enters the outdoor heat exchanger 8 (7/7/a, operation). Here-
The evaporated refrigerant passes through a solenoid valve 5, undergoes second evaporation in a hot water heat exchanger 4, and is sucked into a compressor 2 through a four-way valve 6 and two Achimlet tachos.
＠ 室内循環水（ロ）路の説明
ｍｍ水ポンプ２２により吐出した循環水は２３で水側熱
交換器２４方向と温水器２６方向にわかれて各熱交換器
にて熱交換され、温水器２６の下流に設けられた電磁弁
２７を過きてから再ひ合流され、室内側熱交換器６１に
至る。ここで熱交換され（ファン６０は運ｋ）循環水ポ
ンプ２２に戻る。従って室内用熱交換器１１は温水器２
６と独立して水側熱交換器２４と熱交換されるので室外
用熱交換器１１での冷媒凝縮温度全像く抑えることがで
き、ヒートポンプ式冷凍機の成績糸数倉向上することが
できる。@ Explanation of the indoor circulating water (b) path mm The circulating water discharged by the water pump 22 is divided into the water side heat exchanger 24 direction and the water heater 26 direction at 23, heat exchanged in each heat exchanger, and the water heater 26 After passing through the electromagnetic valve 27 provided downstream of the air, the air is remerged and reaches the indoor heat exchanger 61. Here, heat is exchanged (the fan 60 is operated) and the water returns to the circulating water pump 22. Therefore, the indoor heat exchanger 11 is the water heater 2
Since heat is exchanged with the water side heat exchanger 24 independently of the heat exchanger 6, the refrigerant condensation temperature in the outdoor heat exchanger 11 can be suppressed completely, and the performance of the heat pump type refrigerator can be improved.
Ｏ排熱水回路の説明
冷房運転時に同じであるがファン１６は停止状態にして
おく。O Description of Exhaust Hot Water Circuit Same as during cooling operation, but the fan 16 is kept in a stopped state.
（６）給湯運転時における作動
■ 冷媒回路の説明
圧縮機２を出た冷媒は四方弁３？通り温水用主熱交換器
４に入り凝縮した後、膨張器６で膨張され室外用熱交換
器８に入る。ここで蒸発され（ファン７は運転）、電磁
弁９を通り室外用熱交換器１１に入る。この熱交換器は
通過するだけである。通過した冷ａは四方弁６を通りア
キームレータ１２を経て圧縮機２に吸い込１れる。(6) Operation during hot water supply operation ■ Explanation of the refrigerant circuit Is the refrigerant leaving the compressor 2 the four-way valve 3? After entering the main heat exchanger 4 for hot water and condensing, it is expanded in the expander 6 and enters the outdoor heat exchanger 8. Here, it is evaporated (fan 7 is in operation) and enters outdoor heat exchanger 11 through electromagnetic valve 9. This heat exchanger is only passed through. The passed cold a passes through the four-way valve 6, passes through the achievator 12, and is sucked into the compressor 2.
＠ 循環水回路は使わない。@ Do not use the circulating water circuit.
Ｏ排熱水回路の説明 暖房運転時と同じである。Description of O exhaust hot water circuit This is the same as during heating operation.
（４）除霜運転時における作動
■ 冷媒回路の説明
暖房運転時、外気温低下により室外用熱交換器８に層相
が生じると冷房運転に切換え、室外用熱交換器８の除霜
を行なう。(4) Operation during defrosting operation ■ Explanation of the refrigerant circuit During heating operation, when a layer phase occurs in the outdoor heat exchanger 8 due to a drop in outside temperature, the system switches to cooling operation and defrosts the outdoor heat exchanger 8. .
■ 排熱水回路の説明 暖房運転時と同じである。■ Explanation of exhaust hot water circuit This is the same as during heating operation.
θ 循環水回路の説明
暖房運転時と同じである。同、室外用熱交換器１１が蒸
発器となるが、温水用補助熱交換器１５にて排熱で加熱
され２９０点で合流して室内１ｕ１１熱交換器６１に送
り込まれるので冷風は出ない。θ Description of circulating water circuit Same as during heating operation. Similarly, the outdoor heat exchanger 11 serves as an evaporator, but it is heated by exhaust heat in the hot water auxiliary heat exchanger 15, joins at 290 points, and is sent to the indoor 1U11 heat exchanger 61, so no cold air is emitted.
本発明による冷暖房給湯装置は、Ｒ’ｌｌ述のように構
成されているので、下記の効果がある。Since the air-conditioning/heating/water supply device according to the present invention is configured as described in R'll, it has the following effects.
（１）室内用熱交１１！！器會設けたことによりザラ一
方式となり、室内機への配管は循環水用の水配管たけで
すむので、据付工事が簡略化でき、さらに室内機は市販
のファンコイルが使用できるので安価でメンテナンスが
′６易になり、１だ暖房時暖房水循慎回路が２系統とな
り暖房時冷媒回路の凝縮温度會低く抑えることができ成
績係数が向上する。(1) Indoor heat exchanger 11! ! The installed equipment makes it a simple one-sided system, and the piping to the indoor unit is just the water piping for circulating water, which simplifies installation work.Furthermore, commercially available fan coils can be used for the indoor unit, making maintenance inexpensive. The heating water circulation circuit during heating becomes two systems, and the condensation temperature of the refrigerant circuit during heating can be kept low, improving the coefficient of performance.
（２）奸知が極力少ない構成になっているので信頼性が
向上さ１する。(2) Reliability is improved because the structure has as few tricks as possible.
図面は本発明による冷暖房給湯装置のヒートポンプ式冷
媒回路、熱動機関排熱水回路、給湯回路および循環水回
路の構成を示す系統図である。
１ ・・・ 熱動機関
２ ・・・ 圧縮機
４ ・・・ 温水用主熱交換器
８ ・・・ 室外用熱交換器
１１ ・・・ 室内用熱交換器
１５ ・・・ 温水用主熱交換器
１７ ・・・ 室外用放熱器
２０ ・・・ 給湯用加熱器
２４ ・・・ 水側熱交換姦
２６ ・・・ 温水器
６１ ・・・ 室内側熱交換器
代理人 弁理士 藤 杢 礒The drawing is a system diagram showing the configuration of a heat pump type refrigerant circuit, a thermal engine exhaust hot water circuit, a hot water supply circuit, and a circulating water circuit of the air conditioning/heating and hot water supply system according to the present invention. 1... Thermal engine 2... Compressor 4... Main heat exchanger for hot water 8... Outdoor heat exchanger 11... Indoor heat exchanger 15... Main heat exchanger for hot water Container 17...Outdoor radiator 20...Hot water heater 24...Water side heat exchanger 26...Water heater 61...Indoor heat exchanger agent Patent attorney Isao Fuji Moku
Claims (1)
用主熱交換器と、冷暖房時にそれぞれ一方が凝縮器、他
方が蒸発器として使用される室内用および室外用熱交換
器とケ有するヒートポンプ式冷媒回路と、前記熱動機関
と、該機関からの高温排水を放熱する温水用補助熱交換
器と、この排水の熱を室外に排棄する室外用放熱器と全
有する排熱水回路と、前記温水用主熱交換器および温水
用補“助熱交換器で加熱される温水器と、暖房時前記温
水器と並流し冷房時該温水器をバイパスして前記室内用
熱交換器と熱交換される水側熱交換器と、該熱交換器と
並設された室内側熱交換器とケ有する儂環水回路と、Ａ
’ｌ前記温水器で加熱され市水が加熱される給湯用加熱
器を有する給湯回路とからなる冷暖房給湯装置。 （２ン 室内側熱交換器を水側熱交換器と分離接続し
た特許請求の範囲第（１ン項記載の冷暖房給湯装置。[Scope of claims] A heat pump type refrigerant circuit having an exchanger, the thermal engine, an auxiliary hot water heat exchanger for dissipating heat from high-temperature waste water from the engine, an outdoor radiator for discharging the heat of this waste water outdoors, a water heater heated by the main heat exchanger for hot water and the auxiliary heat exchanger for hot water; A water-side heat exchanger that exchanges heat with a water-side heat exchanger, and an indoor-side heat exchanger installed in parallel with the heat exchanger;
'l An air-conditioning/heating water supply system comprising a hot water supply circuit having a hot water heater for heating city water by the water heater. (2) An air-conditioning, heating, and hot-water supply apparatus according to claim 1, wherein an indoor heat exchanger is separately connected to a water-side heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56184519A JPS5886368A (en) | 1981-11-19 | 1981-11-19 | Air-conditioning hot-water supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56184519A JPS5886368A (en) | 1981-11-19 | 1981-11-19 | Air-conditioning hot-water supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5886368A true JPS5886368A (en) | 1983-05-23 |
| JPH0138231B2 JPH0138231B2 (en) | 1989-08-11 |
Family
ID=16154612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56184519A Granted JPS5886368A (en) | 1981-11-19 | 1981-11-19 | Air-conditioning hot-water supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5886368A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63113268A (en) * | 1986-10-29 | 1988-05-18 | 大和興産株式会社 | Waste heat-temperature difference combination drive type heater |
-
1981
- 1981-11-19 JP JP56184519A patent/JPS5886368A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63113268A (en) * | 1986-10-29 | 1988-05-18 | 大和興産株式会社 | Waste heat-temperature difference combination drive type heater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0138231B2 (en) | 1989-08-11 |
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